A look back: Boozer missed season's first 15 games after fracturing a bone in his right hand. He played well in December and January, however turf toe limited his lift and effectiveness in the playoffs.

A look ahead: Boozer dropped roughly 20 pounds and the team has emphasized playing inside-out. He must stay healthy and regain the lift and explosiveness that led to two All-Star appearances with Utah.

Ronnie Brewer

Height, weight, position: 6-7, 227, G.

Age, experience, college: 26, 5 seasons, Arkansas.

Contract status: In the final season of two-year, $9.5 million deal. Team holds $4.37 million team option for 2012-13.

A look back: Finished regular season strong and played well in postseason after battling a sore hamstring early in season. Led the team in steals and served as disruptive force on defense.

A look ahead: Will adjust to new role with the addition of Richard Hamilton after closing many games for Keith Bogans last season. Sneaky cutter along baseline makes him an underrated offensive player.

Jimmy Butler

Height, weight, position: 6-7, 220, G-F.

Age, experience, college: 22, R, Marquette.

Contract status: Entering first season of scaled rookie contract that will pay prorated portion of $1,052,760.

A look back: Played in every game for the second time in his career and thrived in Tom Thibodeau's system. Earned votes for Defensive Player of the Year for first time in his career.

A look ahead: More of a system player than a creator, Deng should again thrive with the addition of Richard Hamilton as another offensive option. Again will be asked to check opponent's best perimeter player.

Taj Gibson

Height, weight, position: 6-9, 225, F.

Age, experience, college: 26, 2 seasons, USC.

Contract status: Will make prorated portion of $1,195,680 in his rookie contract. Bulls hold his rights through 2013-14.